Blender requires a saved scene to be stored on your hard drive. Please save the file before running the Generate Building command.

UrbanOSM uses a simplified geographic projection based on the Web Mercator approach. This means coordinates are converted approximately – typically accurate to within a few meters in most urban areas. While not suitable for engineering or construction purposes, this level of precision is more than sufficient for urban studies, concept design, and visual analysis. If exact GIS-grade accuracy is required, external tools like QGIS with proper projections should be used.

This addon relies entirely on the data available in the OSM file. If height information is missing, estimated, or incorrect in the original dataset, it will reflect that in Blender. The addon doesn't generate or guess data – it only visualizes what is present in the OSM source.

No. The availability and accuracy of OSM data depends on the location. Densely mapped cities often have detailed information like building height, function, and road types. In rural or less-mapped areas, some of this data may be missing or outdated.

OpenStreetMap (OSM) is a collaborative, open-source mapping project. The data is created and maintained by volunteers around the world – anyone can contribute by adding or editing roads, buildings, land use, and other geographic features. It’s like Wikipedia, but for maps.